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5-amino-2,3,4,7-tetrahydro-7-(4-fluorophenyl)-1,1-dioxothieno[3,2-b]pyran-6-carbonitrile is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

1338579-99-9

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1338579-99-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1338579-99-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,3,8,5,7 and 9 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1338579-99:
(9*1)+(8*3)+(7*3)+(6*8)+(5*5)+(4*7)+(3*9)+(2*9)+(1*9)=209
209 % 10 = 9
So 1338579-99-9 is a valid CAS Registry Number.

1338579-99-9Downstream Products

1338579-99-9Relevant academic research and scientific papers

Solvent-free three-component synthesis of 7-aryl-1,1-dioxothieno[3,2-b] pyran derivatives catalyzed by ammonium acetate

Yao, Changsheng,Feng, Xiaodong,Wang, Cuihua,Jiang, Bei,Yu, Chenxia,Wang, Xiangshan,Li, Tuanjie,Tu, Shujiang

experimental part, p. 1111 - 1116 (2011/10/31)

An efficient synthesis of 7-aryl-1,1-dioxothieno[3,2-b]pyran derivatives via the reaction of aryl aldehyde, tetrahydrothiophene-3-one-1,1-dioxide and malononitrile or ethyl 2-cyanoacetate was performed at room temperature catalyzed by ammonium acetate und

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